ch.8 /4 O S.I.A. Best Songs V xO Syllabus for Statistics* Hmwk: Chapter 8 - Mat xMy Questions | bartleby x= 6.1 The Standard Norm xBookmarksA webassign.net/web/Student/Assignment-Responses/last?dep=25262768A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drugon a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.6; 2.8; 3.0; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4.NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption,though.)O Part (a)(i) Round your answer to two decimal places.(rounded to two decimal places)(ii) Round your answer to two decimal places.Sy =(rounded to two decimal places)(iii) Enter an exact number as an integer, fraction, or decimal.n =(iv) Enter an exact number as an integer, fraction, or decimal.n-1 =+ Part (b)O Part (c)O Part (d)Which distribution should you use for this problem? (Enter your answer in the form z or tf where df is the degrees of freedom.)Explain your choice.The Student's t-distribution should be used because the sample standard deviation is known and the sample size is small.O The standard normal distribution should be used because the population standard deviation is known.The Student's t-distribution should be used because the sample size is small. O S.I.A. Best Songs V xO Syllabus for Statistics w X* Hmwk: Chapter 8 - Mat xMy Questions | bartleby x= 6.1 The Standard Norm xBookmarksA webassign.net/web/Student/Assignment-Responses/last?dep=25262768O Part (e)Construct a 95% confidence interval for the population mean length of time.(i) State the confidence interval. (Round your answers to two decimal places.)(ii) Sketch the graph.aC.L. =%3D(iii) Calculate the error bound. (Round your answer to two decimal places.)O Part (f)What does it mean to be "95% confident" in this problem?O This means that the chances of a tranquilizer being effective is 95%.We are 95% confident that the effectiveness of a tranquilizer lies between the interval values.This means that if intervals are created from repeated samples, 95% of them will contain the true population average length of effectiveness of tranquilizers.O This means that we are 95% confident that the average length of effectiveness of tranquilizers in the sample of 9 people is between the interval values.

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Description: ch.8 /4 O S.I.A. Best Songs V xO Syllabus for Statistics* Hmwk: Chapter 8 - Mat xMy Questions | bartleby x= 6.1 The Standard Norm xBookmarksA webassign.net/web/Student/Assignment-Responses/last?dep=25262768A pharmaceutical company makes tranquilizers

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A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.6; 2.8; 3.0; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)

A pharmaceutical company makes tranquilizers. It is assumed that the distribution for the length of time they last is approximately normal. Researchers in a hospital used the drug on a random sample of 9 patients. The effective period of the tranquilizer for each patient (in hours) was as follows: 2.6; 2.8; 3.0; 2.3; 2.3; 2.2; 2.8; 2.1; and 2.4. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.

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ch.8 /4

O S.I.A. Best Songs V x
O Syllabus for Statistics w X
* Hmwk: Chapter 8 - Mat x
My Questions | bartleby x
= 6.1 The Standard Norm x
Bookmarks
A webassign.net/web/Student/Assignment-Responses/last?dep=25262768
O Part (e)
Construct a 95% confidence interval for the population mean length of time.
(i) State the confidence interval. (Round your answers to two decimal places.)
(ii) Sketch the graph.
a
C.L. =
%3D
(iii) Calculate the error bound. (Round your answer to two decimal places.)
O Part (f)
What does it mean to be "95% confident" in this problem?
O This means that the chances of a tranquilizer being effective is 95%.
We are 95% confident that the effectiveness of a tranquilizer lies between the interval values.
This means that if intervals are created from repeated samples, 95% of them will contain the true population average length of effectiveness of tranquilizers.
O This means that we are 95% confident that the average length of effectiveness of tranquilizers in the sample of 9 people is between the interval values.

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